package com.ruoyi.auth.service;

import com.ruoyi.system.api.RemoteUserService;
import org.springframework.stereotype.Component;
import com.ruoyi.common.core.constant.CacheConstants;
import com.ruoyi.common.core.constant.Constants;
import com.ruoyi.common.core.constant.SecurityConstants;
import com.ruoyi.common.core.constant.UserConstants;
import com.ruoyi.common.core.domain.R;
import com.ruoyi.common.core.enums.UserStatus;
import com.ruoyi.common.core.exception.ServiceException;
import com.ruoyi.common.core.text.Convert;
import com.ruoyi.common.core.utils.DateUtils;
import com.ruoyi.common.core.utils.StringUtils;
import com.ruoyi.common.core.utils.ip.IpUtils;
import com.ruoyi.common.redis.service.RedisService;
import com.ruoyi.common.security.utils.SecurityUtils;
import com.ruoyi.system.api.domain.SysUser;
import com.ruoyi.system.api.model.LoginUser;

import javax.annotation.Resource;

/**
 * 登录校验方法
 * @author ruoyi
 */
@Component
public class SysLoginService {

    @Resource
    private RemoteUserService remoteUserService;

    @Resource
    private SysPasswordService passwordService;

    @Resource
    private SysRecordLogService recordLogService;

    @Resource
    private RedisService redisService;

    /**
     * 登录
     */
    public LoginUser login (String username, String password) {
        // 用户名或密码为空 错误
        if ( StringUtils.isAnyBlank ( username, password ) ) {
            recordLogService.recordLogininfor ( username, Constants.LOGIN_FAIL, "用户/密码必须填写" );
            throw new ServiceException ( "用户/密码必须填写" );
        }
        // 密码如果不在指定范围内 错误
        if ( password.length () < UserConstants.PASSWORD_MIN_LENGTH
                || password.length () > UserConstants.PASSWORD_MAX_LENGTH ) {
            recordLogService.recordLogininfor ( username, Constants.LOGIN_FAIL, "用户密码不在指定范围" );
            throw new ServiceException ( "用户密码不在指定范围" );
        }
        // 用户名不在指定范围内 错误
        if ( username.length () < UserConstants.USERNAME_MIN_LENGTH
                || username.length () > UserConstants.USERNAME_MAX_LENGTH ) {
            recordLogService.recordLogininfor ( username, Constants.LOGIN_FAIL, "用户名不在指定范围" );
            throw new ServiceException ( "用户名不在指定范围" );
        }
        // IP黑名单校验
        String blackStr = Convert.toStr ( redisService.getCacheObject ( CacheConstants.SYS_LOGIN_BLACKIPLIST ) );
        if ( IpUtils.isMatchedIp ( blackStr, IpUtils.getIpAddr () ) ) {
            recordLogService.recordLogininfor ( username, Constants.LOGIN_FAIL, "很遗憾，访问IP已被列入系统黑名单" );
            throw new ServiceException ( "很遗憾，访问IP已被列入系统黑名单" );
        }
        // 查询用户信息
        R<LoginUser> userResult = remoteUserService.getUserInfo ( username, SecurityConstants.INNER );

        if ( R.FAIL == userResult.getCode () ) {
            throw new ServiceException ( userResult.getMsg () );
        }

        LoginUser userInfo = userResult.getData ();
        SysUser user = userResult.getData ().getSysUser ();
        if ( UserStatus.DELETED.getCode ().equals ( user.getDelFlag () ) ) {
            recordLogService.recordLogininfor ( username, Constants.LOGIN_FAIL, "对不起，您的账号已被删除" );
            throw new ServiceException ( "对不起，您的账号：" + username + " 已被删除" );
        }
        if ( UserStatus.DISABLE.getCode ().equals ( user.getStatus () ) ) {
            recordLogService.recordLogininfor ( username, Constants.LOGIN_FAIL, "用户已停用，请联系管理员" );
            throw new ServiceException ( "对不起，您的账号：" + username + " 已停用" );
        }
        passwordService.validate ( user, password );
        recordLogService.recordLogininfor ( username, Constants.LOGIN_SUCCESS, "登录成功" );
        recordLoginInfo ( user.getUserId () );
        return userInfo;
    }

    /**
     * 记录登录信息
     * @param userId 用户ID
     */
    public void recordLoginInfo (Long userId) {
        SysUser sysUser = new SysUser ();
        sysUser.setUserId ( userId );
        // 更新用户登录IP
        sysUser.setLoginIp ( IpUtils.getIpAddr () );
        // 更新用户登录时间
        sysUser.setLoginDate ( DateUtils.getNowDate () );
        remoteUserService.recordUserLogin ( sysUser, SecurityConstants.INNER );
    }

    public void logout (String loginName) {
        recordLogService.recordLogininfor ( loginName, Constants.LOGOUT, "退出成功" );
    }

    /**
     * 注册
     */
    public void register (String username, String password) {
        // 用户名或密码为空 错误
        if ( StringUtils.isAnyBlank ( username, password ) ) {
            throw new ServiceException ( "用户/密码必须填写" );
        }
        if ( username.length () < UserConstants.USERNAME_MIN_LENGTH
                || username.length () > UserConstants.USERNAME_MAX_LENGTH ) {
            throw new ServiceException ( "账户长度必须在2到20个字符之间" );
        }
        if ( password.length () < UserConstants.PASSWORD_MIN_LENGTH
                || password.length () > UserConstants.PASSWORD_MAX_LENGTH ) {
            throw new ServiceException ( "密码长度必须在5到20个字符之间" );
        }

        // 注册用户信息
        SysUser sysUser = new SysUser ();
        sysUser.setUserName ( username );
        sysUser.setNickName ( username );
        sysUser.setPassword ( SecurityUtils.encryptPassword ( password ) );
        R<?> registerResult = remoteUserService.registerUserInfo ( sysUser, SecurityConstants.INNER );

        if ( R.FAIL == registerResult.getCode () ) {
            throw new ServiceException ( registerResult.getMsg () );
        }
        recordLogService.recordLogininfor ( username, Constants.REGISTER, "注册成功" );
    }
}
